Mechanical Properties of Picea sitchensis

Lise Bräuner, Preben Hoffmeyer, Lise Poulsson

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The study establishes the experimental basis for the assignment of Danish grown Sitka spruce to the European strength class system as defined in EN 338 (1995). Seven hundred and ten boards representative of normal Danish commodity are visually strength graded according to the Nordic rules (INSTA 142, 1996) and subsequently taken to failure in either bending or tension. The results show that Danish grown Sitka spruce of grades "T1" and "T2 and better" easily satisfy the requirements for the strength classes C18 and C24 levels, respectively. Danish grown Sitka spruce therefore meets the requirements at the same level as Danish grown Norway spruce. The study shows that Sitka spruce and Norway spruce of the same origin exhibit highly comparable mechanical properties. Key words: annual ring width, bending strength, characteristic strength, dry density, EN 338, INSTA 142, modulus of elasticity, Sitka spruce, strength class, strength grading, tensile strength.
    Original languageEnglish
    JournalScandinavian Journal of Forestry Research
    Volume15
    Pages (from-to)127-134
    Publication statusPublished - 2000

    Cite this

    Bräuner, L., Hoffmeyer, P., & Poulsson, L. (2000). Mechanical Properties of Picea sitchensis. Scandinavian Journal of Forestry Research, 15, 127-134.